Polar 5°F 3.33 lb Hybrid Down & EulinFiber Mummy Sleeping Bag for Winter Backpacking & Alpine Camping

$149.99 USD

Polar 5°F 3.33 lb Hybrid Down & EulinFiber Mummy Sleeping Bag for Winter Backpacking & Alpine Camping

Name: Polar 5°F 3.33 lb Hybrid Down & EulinFiber Mummy Sleeping Bag for Winter Backpacking & Alpine Camping
Brand: Eusebio Sporting USA
SKU: SBMU-CDBU-002
Price: 149.99 USD
Availability: InStock

$149.99 USD

Shipping calculated at checkout.

Key Features

Temperature Rating: 5°F (-15°C)
Weight: 3.33 lb
Hybrid Down & EulinFiber insulation
Lightweight mummy sleeping bag design
50D polyester shell with PFAS-free water-repellent finish
Soft 50D polyester lining
Insulated hood with adjustable drawcord
Insulated collar and zipper baffles
Anatomically shaped footbox
Built-in pillow sleeve
Zippered footbox storage pocket
Compact 2-step stuff sack included
Fits users up to 78 in tall
Ideal for backpacking, alpine camping, trekking, hiking, and outdoor travel

Product Description

Designed for lightweight cold-weather adventures, the Polar 5°F Hybrid Down & EulinFiber Mummy Sleeping Bag combines premium duck down with advanced EulinFiber insulation technology to deliver an excellent balance of packability, loft, and outdoor versatility. At just 3.33 lb, it is built for backpackers, trekkers, hikers, and campers who want to reduce pack weight without sacrificing cold-weather capability.

The hybrid insulation system combines the compressibility and loft of down with the durability and moisture-management characteristics of EulinFiber. The contoured mummy shape, insulated hood, adjustable drawcords, and anatomical footbox help create a streamlined sleeping system suitable for overnight use in cooler environments.

Constructed with a durable 50D polyester shell featuring a PFAS-free water-repellent finish, the Polar sleeping bag is designed for repeated outdoor use. Additional features include insulated zipper baffles, a zippered footbox pocket for small essentials, a built-in pillow sleeve, and a compact 2-step stuff sack for convenient storage and transport.

Whether you're heading into the mountains, tackling multi-day backpacking routes, or preparing for cold-weather camping trips, the Polar 5°F offers lightweight performance, compact packability, and dependable outdoor comfort.

5°F

86.6 x 31.5 x 21.7 in

3.33 lb

Hybrid Down & EulinFiber

Details:

Hybrid Insulation System for Balanced Warmth:
Unlike standard synthetic or full-down bags, the Polar uses a hybrid insulation design:

High-quality duck down insulation in the upper layer for superior loft and warmth

Proprietary synthetic fiber insulation in the lower layer for moisture resistance and durability

This combination optimizes warmth, compression, and performance in damp conditions — making it ideal for unpredictable outdoor environments.

Technical Mummy Design for Maximum Efficiency:
The mummy shape reduces internal air space to retain body heat efficiently. An insulated warm collar with an adjustable concealed drawcord blocks cold drafts.

The shaped foot box enhances warmth while allowing natural foot positioning.

Loose-cover construction helps eliminate cold spots for consistent thermal performance.

Why Choose a Hybrid Down Sleeping Bag?

A hybrid down sleeping bag combines the loft and warmth of down insulation with the moisture resistance and durability of synthetic fibers. This makes it ideal for cold weather camping where condensation or damp conditions may occur.

Compared to a fully synthetic sleeping bag, hybrid insulation offers better warmth-to-weight performance and improved packability.

Expanded Pocket System

Expanded Foot Pocket Storage – Built-in storage space for added functionality.

Dedicated Storage Zone – Keep essentials organized and easy to access.

Compact Packing Design – Packs down neatly for travel and transport.

Smart Space Utilization – Maximizes function without added bulk.

Anti-Snag Zipper

Anti-Snag Zipper – Designed for smooth and frustration-free operation.

Smooth Zip Performance – Helps reduce fabric catching while opening or closing.

Easy Entry Design – Built for quick access and effortless use.

Reliable Zipper System – Engineered for smoother everyday performance.

Snag-Resistant Design – Helps keep fabric from getting caught.

Hassle-Free Access – Smooth operation for getting in and out with ease.

Inner Sleeping Bag Pocket

Interior Storage Pocket – Keep small essentials secure and within reach.

Quick Access Storage – Convenient interior pocket for grab-and-go items.

Secure Interior Pocket – Designed to keep valuables close while you rest.

Organized Bedside Storage – Store essentials without leaving the sleeping bag.

Easy-Reach Pocket Design – Keeps important items nearby and easy to find.

Convenient Gear Storage – Perfect for phones, flashlights, and small essentials.

Built for the Journey Ahead

Adventure-Ready Comfort – Built for dependable sleep wherever the trail leads.

Warmth When It Matters – Designed to help keep you comfortable through the night.

Compact Travel Design – Packs down easily for transport and storage.

Outdoor-Ready Performance – Made for campsites, trails, and weekend escapes.